How to filter 2 bands and one mode?

[F1NQP]

Hello and happy new year to everyone.
I'm working with v2.30.1.0
I've created filters, for example, to review my monthly qso's. They work very well, but only 1 band at a time.
For example, in "QSO Manager", I would like to filter my 2M+70CM+FT8 qso for a given period, then export to an adif.
If I only try the 2M band it works, 2M+FT8 it works, but from the moment I choose 2 bands, the QSO manager window remains empty.
Does the filter not work with 2 simultaneous bands or am I missing something?
I haven't used AND and OR because I don't understand their purpose. The manual does not mention in detail how these 2 parameters work. Maybe that's the key.
73 good day to you all.
F1NQP Jean-Jacques

[G4POP]

Hello and happy new year to everyone.
I'm working with v2.30.1.0
I've created filters, for example, to review my monthly qso's. They work very well, but only 1 band at a time.
For example, in "QSO Manager", I would like to filter my 2M+70CM+FT8 qso for a given period, then export to an adif.
If I only try the 2M band it works, 2M+FT8 it works, but from the moment I choose 2 bands, the QSO manager window remains empty.
Does the filter not work with 2 simultaneous bands or am I missing something?
I haven't used AND and OR because I don't understand their purpose. The manual does not mention in detail how these 2 parameters work. Maybe that's the key.
73 good day to you all.
F1NQP Jean-Jacques

Does it not work using the 'and' and 'or' commands?

[F1NQP]

I can't figure out how they work. I've made up several filters with different combinations, but none of them work.

[G4POP]

Like this plus date range

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